Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683227 | Multistage ejector assembly | Shigekazu Nagai | 1997-11-04 |
| 5667270 | Focus detecting device | Akira Akashi | 1997-09-16 |
| 5617338 | Method of and system for electrically processing vacuum pressure information suitable for use in vacuum unit | Shigeru Sugano, Takashi Takebayashi, Shigekazu Nagai, Yoshiharu Ito, Mitsuhiro Saito +1 more | 1997-04-01 |
| 5601415 | Fluid pressure device | Shigekazu Nagai, Yoshiharu Ito, Akio Saitoh | 1997-02-11 |